摘要
建立了一种以次氯酸钠作氧化剂,碱性加压氧化法溶解王水不溶渣中钌的方法。以酒精沉淀,盐酸溶解,硫脲分光光度法进行样品中钌含量的测定。方法对王水不溶渣中钌的溶解效果好,操作简单;王水不溶渣加压氧化浸出液共存的主要杂质离子Na+、Cl-、Pb2+、Bi2+等(不含Os)对吸光度无影响。采用硫脲分光光度法测定样品中13.771μg/mL钌,RSD(n=6)为1.536%,加标回收率为98.73%～102.76%。
Ruthenium in aqua regia-insoluble residue was dissolved by an alkaline pressure oxidation method with sodium hypochlorite as antioxidant in alkaline system, followed by content analysis of ruthenium using the thiourea-spectrophotometry. Ruthenium could be converted into the solution and the accompanying main impurity ions （such as Na^＋, Cl^-, Pb^2＋, Bi^2＋） had no interference with the determination of ruthenium. The relative standard deviation （n=6） was 1.536% in the sample containing 13.771 μg/mL of ruthenium, and the recovery of the addition of standard ruthenium was 98.73%-102.76%.
出处
《贵金属》
CAS
CSCD
北大核心
2013年第4期43-47,52,共6页
Precious Metals
基金
湖南省重大专项项目(2009FJ1007)
关键词
分析化学
王水不溶渣
硫脲
钌
分光光度法
analytical chemistry
aqua regia insoluble residue
thiourea
ruthenium
spectrophotometry
